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Updated: May 20, 2026

Using a 1064-nm Picosecond Neodymium-Doped Yttrium Aluminum Garnet Laser for Periorbital Hyperpigmentation
Published on: May 23, 2025
Simultaneous passively Q-switched dual-wavelength solid-state laser working at 1065 and 1066 nm
Florent Pallas1, Emilie Herault, Jean-Francois Roux
1Institut de Microelectronique d’Electromagnetisme et de Photonique-Laboratoire d’Hyperfrequences et de Caracterisation, Grenoble-Institut National Polytechnique, 3 parvis Louis Neel, 38000 Grenoble, France.
Abstract:
A passively Q-switched dual-wavelength solid-state laser is presented. The two wavelengths are emitted by two different crystals in order to avoid gain competition, and the synchronization between the pulses is obtained by external triggering of the saturable absorber. Sum frequency mixing is demonstrated, proving the interest of this source for terahertz generation in the 0.3-0.4 THz range through difference frequency generation.
